IxDF Certificate of Completion

Human-Computer Interaction: The Foundations of UX Design

IxDF Course Certificate awarded to Erik van Dijk for completing the "Human-Computer Interaction: The Foundations of UX Design" course
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The Interaction Design Foundation (IxDF) hereby certifies that the IxDF Course Certificate (ID #408f2e9e-62c5-4aaf-9439-4bb32af6d6f5) has been conferred upon Erik van Dijk with a Top 10% Course Taker Distinction in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex. View Course Curriculum.

This document serves as the official record of the above credential. Third parties may reference the certificate ID to verify its authenticity. The Interaction Design Foundation maintains permanent records of all credentials issued.

Verified Competencies Demonstrated by Erik van Dijk

By completing this curriculum to the standards of the IxDF Educational Codex, Erik van Dijk has demonstrated mastery of how to:

  • Ground design decisions within the foundations of HCI, including ergonomics, human factors, cognitive psychology, and the trajectory of computing from mainframes to ubiquitous devices.

  • Use cognitive science to build interactive systems people can understand, use, and trust.

  • Identify real user needs, define the right problem, and design interventions that fit how people actually live and work.

  • Develop grounded user understanding with personas, cultural probes, technology probes in realistic settings, and scenarios that connect user goals to lived context.

  • Run the iterative design cycle from analysis through prototyping and evaluation, selecting the right fidelity of probe (paper, functional, deployed) for the right moment.

  • Judge when iterative refinement is productive and when a fundamentally flawed starting point requires reframing the problem rather than polishing the solution.

  • Design navigation that works at every scale: local orientation through the four wayfinding rules, information scent and breadcrumbs at the page level, and global structure through network diagrams and consistent dialog patterns.

  • Organize screens for clarity using semantic grouping, alignment, white space, and redundant coding that ensures accessibility without relying on color alone.

  • Apply sound principles of grouping, redundant encoding, and mode design to physical devices and voice interfaces.

  • Design for global audiences by planning for localization, text expansion, culturally specific symbols, and the assumptions embedded in Western interface conventions.

  • Use aesthetics deliberately, understanding their role in building trust and differentiating products while avoiding cosmetic fixes that mask functional problems.

Erik van Dijk

Erik van Dijk

Senior UX Designer

Leidschendam, Netherlands, Netherlands
  • IxDF
 Best-in-Class
    IxDF Best-in-Class distinction: Completed an IxDF Course with a score of 100%
  • IxDF Top 10%
 Course Taker
    IxDF Top 10% Course Taker distinction: Completed an IxDF course with a score of 90%
  • IxDF Assiduous
 Learner Award
    IxDF Assiduous Learner Award distinction: Completed 5 IxDF Courses
  • IxDF Local
 Group Member
    IxDF Local Group Member distinction: Member of an IxDF Local Group
  • IxDF Certified
 Course Completer
    IxDF Certified Course Completer distinction: Completed one or more IxDF Courses.

IxDF Distinctions

Distinctions are conferred upon Erik van Dijk in formal recognition of their notable achievements and contributions, as stipulated by the IxDF Educational Codex.

IxDF Assiduous
 Learner Award Distinction IxDF Assiduous Learner Award
Completed 5
IxDF Courses
IxDF
 Best-in-Class Distinction IxDF Best-in-Class
Completed an IxDF Course
with a score of 100%
IxDF Certified
 Course Completer Distinction IxDF Certified Course Completer
Completed one or more
IxDF Courses.
IxDF Local
 Group Member Distinction IxDF Local Group Member
Member of an
IxDF Local Group
IxDF Top 10%
 Course Taker Distinction IxDF Top 10% Course Taker
Completed an IxDF course
with a score of 90%
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Certificates Earned
by Erik van Dijk

IxDF Course Certificates are awarded to Erik van Dijk in formal recognition of completing evidence-based curricula taught by industry leaders, to the standards established by the IxDF Educational Codex.

View Certificate
Object-Oriented UI Design: Build Interfaces Users Love certificate

Object-Oriented UI Design: Build Interfaces Users Love

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View Certificate
Human-Computer Interaction: The Foundations of UX Design certificate

Human-Computer Interaction: The Foundations of UX Design

View Certificate

IxDF Membership Certificate

This IxDF Membership Certificate (ID #mc_TDsZnn7hv) has been issued to Erik van Dijk in formal recognition of their membership of the Interaction Design Foundation (IxDF).

The authenticity of this membership certificate can be verified on this permanent link.

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